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Silverlight 4001 error

Posted on 2010-08-13
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Last Modified: 2013-11-29
Player will load but reports error 4001 "could not open media file"

This only happens on PC running Win7 64-bit with IE 8 32-bit

I can launch the wmv directly from the path..say...http://www.mydomain.com/silverlightvideos/alpha.wmv

But silverlight gives the above error...

....please help
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Question by:BigBadWolf_000
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by:*** Hopeleonie ***
ID: 33437196
Is the source URL valid?
Can you post the Website link?
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by:*** Hopeleonie ***
ID: 33437220
http://www.mydomain.com/silverlightvideos/alpha.wmv

get the error :
404
Page not Found
You will be redirected to the home page momentarily
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by:BigBadWolf_000
ID: 33437325
That was just an example. Problem is not with the site or link....I can view the video through Silverlight ok in Windows XP and other Windows 7 64-bit (with IE8 32-bit) PCs.
Its just this one PC with Win7-64..However it works if I disable UAC.
But on the other PCs it works with UAC enabled

I have Zonealarm installed on the PC with the problem, but when I disable ZA it still wont work. I will try uninsatiing ZA and see i it helps
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*** Hopeleonie *** earned 500 total points
ID: 33437347
Yes maybe Zonealarm.
When you still have problems reset the IE (or Browser) settings.

Had the same issue ones.

Good luck
Leonie
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by:BigBadWolf_000
ID: 33437494
Uninstalled ZA. Problem still exists. But when I disable UAC then it will play. I think its an issue to where it caches the file and UAC does not give it access since I have moved several data and cache folders to another drive. I guess for now I will work with it with UAC disabled and ZA Enabled :)

Thanks for your response.
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Author Closing Comment

by:BigBadWolf_000
ID: 33437533
I dont believe this can be resolved without me putting all Windows data/cache/temp settings back to their default locations. I am awarding Leonie points cause I feel resetting IE settings to default is part of the Windows reset.
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by:*** Hopeleonie ***
ID: 33437549
Thanks BigBadWolf_000
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Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

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